This intensive 3-day course offers hands-on training in the preliminary quality assessment of rubies and sapphires. Participants will learn how to evaluate color, clarity, and cut, and understand how these essential factors influence gemstone quality and market value in today’s competitive industry.
The course culminates in the creation of a Preliminary Quality Opinion Assessment (PQOA) — a non-destructive visual and instrumental assessment that provides a professional opinion on a gemstone’s quality. This initial evaluation helps buyers, sellers, and gem professionals make informed decisions before pursuing full laboratory certification.
